Someone asks how you are.

What do you actually say versus what's really going on?

I say I'm fine, I dealt with a hard day but I'm over it now
I say I'm good, I just need everything to stay on track and it will be
I say I'm busy but good, honestly I don't even have time to think about how I am
I say I'm fine, it's easier than trying to explain something I can't even name